Refrigeration – Processes – Fractionally solidifying a constituent and separating the same
Patent
1998-07-16
2000-11-14
Doerrler, William
Refrigeration
Processes
Fractionally solidifying a constituent and separating the same
62123, 62124, B01D 904, C02F 122
Patent
active
061453404
ABSTRACT:
In the process according to the invention for fractionating substances, particularly paraffins, oils, fats and waxes, which, when crystallized, have poor adhesion to the substantially vertical crystallization surfaces (39) of a crystallizer, screen-like supporting structures, e.g. perforated metal sheets (31) bent in a zig-zag, are disposed between the crystallization surfaces (39) of a crystallizer. The crystals (51) becoming detached from the crystallization surfaces (39) during the sweating phase are left suspended in horizontal strips in the triangular zones (41) on the perforated sheet (31) and remain in thermal contact with the crystallization surface (39) and sweat out the liquid phase (55). The mother liquor (55) drips off, in some cases also between the crystals (51) and the crystallization surface (39), with the result that drip channels are melted by the heated mother liquor and thus opened.
REFERENCES:
patent: 2977234 (1961-03-01), Wenzelberger
patent: 3092673 (1963-06-01), Rush
patent: 3272875 (1966-09-01), Gordon et al.
patent: 4683056 (1987-07-01), Humphries et al.
patent: 4776177 (1988-10-01), Jancic et al.
Jans Bernhard J.
Stepanski Manfred
Doerrler William
Sulzer Chemtech AG
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